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Finding the Fourth Proportional to 245,806.02, 339,244.64 and 138,396.98

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Solution

The fourth proportional to 245,806.02, 339,244.64 and 138,396.98 is: 191,006.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,806.02 : 339,244.64 = 138,396.98 : x
  2. Step 2: Convert to fraction form
    245,806.02/339,244.64 = 138,396.98/x
  3. Step 3: Cross multiply
    245,806.02x = 339,244.64 × 138,396.98
  4. Step 4: Simplify right side
    245,806.02x = 46,950,434,332.30
  5. Step 5: Solve for x
    x = 46,950,434,332.30/245,806.02
  6. Step 6: Final answer
    x = 191,006.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.